Characteristic * | Vaccinated (N = 1425) | Unvaccinated (N = 1094) | Adjusted OR †(95% CI) |
---|---|---|---|
Socio-demographics | |||
Age (mean ± SD) | 13.2 ± 0.3 | 13.2 ± 0.3 | 1.10 (0.81-1.50) |
Neighbourhood income quintile | |||
   1 (lowest) | 18.9 | 20.8 | 0.87 (0.65-1.15) |
   2 | 17.5 | 18.9 | 0.80 (0.60-1.06) |
   3 (reference) | 20.8 | 18.1 | 1.00 (reference) |
   4 | 20.4 | 21.3 | 0.75 (0.57-0.99)††|
   5 (highest) | 21.8 | 19.4 | 0.91 (0.69-1.19) |
   Missing‡ | 0.6 | 1.5 | 1.34 (0.50-3.61) |
Place of residence | |||
   Urban (reference) | 78.4 | 77.5 | 1.00 (reference) |
   Rural | 21.1 | 21.0 | 1.14 (0.90-1.43) |
   Missing‡ | 0.6 | 1.5 | 1.34 (0.50-3.61) |
Vaccination History | |||
MMR | 96.1 | 78.9 | 3.21 (2.25-4.57)††|
Meningococcal C | 88.5 | 60.2 | 2.16 (1.64-2.84)††|
Hepatitis B | 90.7 | 62.2 | 2.86 (2.14-3.83)††|
All three vaccines§ | 83.2 | 51.1 | 4.89 (4.04-5.92)††|
Health Services Utilisation | |||
Hospitalizations‖ | |||
   None (reference) | 19.5 | 20.4 | 1.00 (reference) |
   1 | 61.9 | 59.7 | 0.82 (0.63-1.07) |
   2 | 13.1 | 13.6 | 0.71 (0.50-1.01) |
   ≥ 3 | 5.5 | 6.3 | 0.64 (0.38-1.06) |
Emergency Department visits‖ | |||
   None (reference) | 25.9 | 30.2 | 1.00 (reference) |
   1 | 21.5 | 22.2 | 1.00 (0.78-1.28) |
   2-7 | 43.4 | 38.9 | 1.16 (0.92-1.46) |
   ≥ 8 | 9.2 | 8.7 | 1.13 (0.77-1.66) |
Outpatient visits‖ | |||
   0-13 (reference) | 8.5 | 12.0 | 1.00 (reference) |
   14-45 | 40.8 | 42.3 | 0.91 (0.64-1.31) |
   46-92 | 39.9 | 37.5 | 1.07 (0.73-1.57) |
   ≥ 93 | 10.8 | 8.2 | 1.31 (0.82-2.11) |
Medical History | |||
Previous diagnosis | |||
   Infectious and parasitic diseases | 15.2 | 13.9 | 0.96 (0.70-1.32) |
   Intestinal infections | 3.7 | 3.3 | 1.25 (0.71-2.20) |
   Chickenpox | 1.6 | 1.7 | 0.92 (0.44-1.91) |
   Cancer | 0.9 | 0.6 | 1.55 (0.52-4.60) |
   Metabolic disorders | 3.0 | 3.0 | 0.90 (0.50-1.61) |
   Disorders of the immune system | 0.1 | 0.1 | 2.18 (0.07-73.24) |
   Diseases of the blood | 1.4 | 1.6 | 0.91 (0.42-1.98) |
   Mental disorders | 0.5 | 0.7 | 1.24 (0.38-4.03) |
   Epilepsy, seizures, and convulsions | 3.2 | 3.1 | 1.11 (0.67-1.86) |
   Gastroenteritis | 5.5 | 4.3 | 1.10 (0.71-1.72) |
   Nephritis | 3.9 | 3.4 | 1.24 (0.75-2.04) |
   Congenital anomalies | 7.0 | 8.9 | 0.78 (0.56-1.09) |
   Syncope | 1.2 | 1.3 | 1.05 (0.47-2.35) |
   Other serious illness | 2.0 | 1.8 | 1.05 (0.55-2.00) |
Immune-mediated events | |||
   Allergic rhinitis | 0.2 | 0.4 | 0.53 (0.10-2.87) |
   Asthma | 5.6 | 6.0 | 0.96 (0.64-1.44) |
   Dermatitis | 4.3 | 3.0 | 1.46 (0.89-2.40) |
Autoimmune diseases | |||
   Diabetes mellitus | 1.3 | 1.7 | 0.57 (0.28-1.15) |
   Multiple sclerosis | 0.0 | 0.1 | - |
   Bell's palsy | 0.2 | 0.5 | 0.38 (0.08-1.69) |
   Guillain-Barré Syndrome | 0.0 | 0.0 | - |
   Juvenile Arthritis | 2.2 | 1.7 | 1.28 (0.66-2.44) |
   Systemic Lupus Erythematosus | 0.0 | 0.0 | - |
Risk factors for autoimmune diseases | |||
   Cytomegalovirus¶ | 0.0 | 0.1 | - |
   Epstein-Barr virus¶ | 0.2 | 0.1 | 4.29 (0.26-71.21) |
   Campylobacter | 0.0 | 0.0 | - |
   Influenza | 15.5 | 13.2 | 1.13 (0.88-1.46) |
   Mycoplasma pneumoniae | 0.1 | 0.1 | 2.81 (0.09-87.47) |